package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;
@Service
@Slf4j
public class CategoryServiceimpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 新增分类
     * @param categoryDTO
     */

    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category=new Category();
        //将属性从前端拷贝到后端
        BeanUtils.copyProperties(categoryDTO,category);
        //设置//分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);
        //设置修改与使用时间
        //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());
        //category.setCreateUser(BaseContext.getCurrentId());
        //category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.insert(category);
    }
    /**
     * 分页查询
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page=categoryMapper.pageQuery(categoryPageQueryDTO);
        long total = page.getTotal();
        List<Category> result = page.getResult();
        return new PageResult(total,result);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Long id) {
        //查询该分类是否关联菜品
        Integer count = dishMapper.countByCategoryId(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        Integer setmeal = setmealMapper.countByCategoryId(id);
        if (setmeal>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category=new Category();
        //将属性从前端拷贝到后端
        BeanUtils.copyProperties(categoryDTO,category);
        //category.setUpdateTime(LocalDateTime.now());
        //category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.update(category);
    }
    /**
     * 启用、禁用分类
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category=new Category();
        category.setId(id);
        category.setStatus(status);
        categoryMapper.update(category);
    }
    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> list(Integer type) {
        return categoryMapper.list(type);
    }

}
